#include "Exam_2_6.h"
#include <iostream>

using namespace std;

int main()
{
	//exam_2_7_1();					//day_2019_04_10_17_28
	//cout << exam_2_7_2(1);		//day_2019_04_10_17_29
	//exam_2_7_3_main();			//day_2019_04_10_17_39
	//cout<<exam_2_7_4();			//day_2019_04_10_17_51
	
	return 0;
}